Furnace wall



July 24, 1923.

' Filed ma 19, 122

1,463,055 M. LIPTAK FURNACE WALL I S eets-Sheet 1 MZ/meiLgh/r July 24 M.LIPTAK FURNAC WALL Filed May 19, 1922 2 Sheets-Sheet 2 M36} 7 ZWM 0F FICE MICHAEL LIPTAK, OF ST. PAUL, MINNESOTA, ASSIGNOR TO A. P. GREEN FIREBRICK COMPANY, OF MEXICO, MISSOURI, A CORPORATION OF MISSOURI.

FURNACE WALL.

Application filed May 19, 1922. Serial No. 562,126.

To all whom it may concern:

Be it known that I, MIGHAEL LIPTAK, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in Furnace Walls; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My present invention relates to furnace wall structures and is in thenature of a modification of or improvement on the Wall structuredisclosed and claimed in my pending application Serial Number 550,841,filed of date April 8, 1922. Generally stated, the invention consists ofthe novel construction, arrangement and combinations of partshereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a perspective with some parts sectioned and some partsremoved, showing a, portion of a wall embodying my invention; Fig. 2 isa fragmentary perspective illustrating one form of the wall structure;Figs. 3, 4, 5 and 6 are perspective vlews showing in detail,respectively, the sillforming block, the shelf-forming block, the keyblock, and the lintel-forming block, of the structure illustrated inFig. 2; and Fig. 7 is a view corresponding to Fig. 2, but illustrating aslightly modified construction.

The complete structure, when designed for an outside wall, is made up ofwhat is designated as a permanent masonry outer wall and a replaceablehighly refractory innor wall. In the preferred arrangement, thepermanent outer wall, through that portion that is subject to the mostintense heat, is faced with highly refractory blocks or bricks, whichbecome a ermanent part of said outer wall. Vertically spaced horizontalchannels are formed in the inner face of the permanent outer wall andare preferably extended substantially from one end to the other of saidwall. The lower surfaces of these horizontal channels are formedby-sill-forming blocks and the upper surfaces thereof are formed bylinte1-- forming blocks, built into the permanent outer wall.

The replaceable inner wall comprises shelf-forming blocks that extendinto the channels of the permanent outer wall and are locked therein bykey blocks inserted between the same and the lintel-forming blocks Theabove provides an arrangement in which the sill-forming blocks, theshelf-forming blocks, the lintel-forming blocks and the key blocks,respectively, form continuous horizontal rows extending nearly or quitefromend to end of the wall in which they are incorporated.

lVith the above arrangement, it is not only possible but feasible tomake all of the wall-forming blocks of the same cross-section ascommercial bricks and to make nearly all of said elements the samelength as commercial bricks.

Attention is called to the fact that, in this specification and in theclaims, the terms bricks and blocks are used synonymously, except wherethe term brick is further qualified by the expression commercial, whichlatter expression, of course, indicates not only the cross-section butalso the length of the brick.

The common masonry bricks 12 of the permanent outer wall may be laid inany desired number of brick widths and in the customary or any suitableway. The sillforming bricks 13 which, as shown in Figs. 1 and 3, arelonger than commercial bricks and are permanently built into thebrickwork 12 but project from the inner face thereof, are preferably thewidth of a commercial brick. The lintel-forming bricks 14 are spacedfrom the underlying sill-forming bricks 13, preferably approximately thedistance of two brick widths, and they project inward from the permanentwall as far as the sill-forming bricks 13, thus forming the horizontallyextended channels 15 above referred to in a general Way. The spacesbetween the horizontal rows of lintelforming bricks 14 and the overlyingsillforming bricks 13 are filled in by masonry belts of fire bricks l6laid the width of one brick in thickness.

The replaceable inner wall illustrated in Fig. 1 should be made uentirel of hi hly refractory bricks or bloc s, and t is repfiaceableinner wall includes horizontal belts of Q reeaoes fire bricks 17. Thesebelts 17 are supported by the shelf-forming bricks 18, which, in thisillustration, have all of the dimensions of commercial bricks andproject through the replaceable fire brick belts 17 and to the. backs ofthe channels 15. Said shelf-forming bricks 18 are seated directly on theexposed upper surfaces of the V sill-forming bricks 13, and to interlockthe same therewith, said bricks 13 are shown as provlded with raisedbeads 19 that are engageable with grooves 20 formed in theunder-surfaces of said shelf-forming bricks. Key blocks 21 are placed onthe shelf-forming bricks 18 and fill the space between the tops thereofand the exposed under-surfaces of the lintel-forming bricks 14. At theirouter ends, the key ,blocks 21 are, in the construction illustrated inFig. 1, flush with the inner ends of the shelf-forming bricks 18 andwith the exposed faces of the fire brick belts 17. Said bricks 18 and 21should, of course,

'be of fire brick or highly refractory material.

By reference to Fig. 1, it will be seen that in the upper portion of thewall, where the heat is not intense, the fire brick facing 16 has beenomitted and the common brick masonry has been built to the inner surfaceof the permanent outer wall. This may be done for the sake of economy,without impairin the efficiency of the wall.

In t e arrangement illustrated in Fig. 1, the lintel-forming bricks 14are not tapered, but the key bricks 21 are shown as slightly tapered soas to insure a close fit thereof in the channels.

In the modified construction illustrated in Figs. 2 to 6, inclusive, thesill-forming bricks 13 extend only part way through the common brickmasonry 12 of the permanentouter wall; the self-forming bricks 18 areset edgewise, the key bricks 21 are laid endwise in a layer so that theydo not project beyond the inner ends of the lintel-forming bricks 14";and both the key bricks 21 1 and lintel-forming bricks 14 are slightlytapered. In this arrangement, the sill-forming bricks 13 are providedwith the lock ribs 19*, and the shelf-forming bricks are formed withco-operating lock grooves 20*.

The construction illustrated in Fig. 7 is like that illustrated in Fig.2, except that the replaceable fire brick belts 17 are laid ed e to edgeas headers and, between these bets inward of the shelf-forming bricks18, fire bricks 17 b are built in as stringers.

It is important to note that in the construction illustrated in Fig. 7,the inner ends of the shelf-forming-blocks 18 do not ex-. tend to theinner surface of the replaceable fire brick wall; but are protected fromthe intense flames by the projecting ends of the underl ing andoverlying bricks 17*, the latter eing laid as headers.

What I claim is:

1. A composite furnace wall comprising a permanent masonry outer wallhaving therein a long continuous channel, in combination with a highlyrefractory replaceable inner Wall including shelf-forming blocks placedadjacent each other in a continuous row and extended into and anchoredWithin the channel of said permanent outer wall, said replaceable innerwall further includ: ing belts of highly refractory material supportedby said shelf-forming blocks.

2. A composite furnace wall comprising a permanent masonry outer wallhaving there in a long continuous channel, in combination with a highlyrefractory replaceable inner wall including shelf-forming blocks placedadjacent each other in a continuous row and extended into and anchoredwithin the channel of said permanent outer wall, and a continuous row ofkey blocks placed on said shelf-forming blocks in a continuous row andfilling the space between the underlying shelf-forming blocks and thetop of said channel, said replaceable inner wall further including beltsof highly refractory material supported by said shelfforming blocks.

3. The structure defined in claim 2 in which shelf-formin blocks haveinterlocking engagement with the bottom of said channel.

4. The structure defined in claim 3 in which said shelf-forming blocksand key blocks have the cross-sectional dimensions of commercial bricks.

5. The structure defined in claim 3 in which said shelf-forming blocksand key blocks form continuous horizontal rows extending the full lengthof said channel and substantially the full length of the wall.

6. A composite furnace wall comprising a permanent masonry outer wallincluding sill-forming blocks and lintel-forming blocks verticallyspaced to form a long continuous horizontal channel, said sill-formingblocks and lintel-forming blocks forming continuous unbroken horizontalrows extending the full length of said channel, in combination with. ahighly refractory replaceable inner wall including shelf-forming blocksextending from said replaceable wall into the channel of said permanentouter wall and forming a continuous shelf the full length of saidchannel, said re laceable inner wall further including be ts of highlyrefractory material supported by said shelf-forming blocks.

7. The structure defined in claim 6 in which said shelf-forming blocksand sillforming blocks have interlocking engagement.

8. The structure defined in claim 6 in further combination with keyblocks placed on said shelf-forming blocks and filling the eeepee Ispace between the same and the overlying lintel-forming blocks.

9. The structure defined in claim 7 in further combination with keyblocks placed on 5 said shelf-forming blocks and filling the spacebetween the same and the overlying lintel-forming blocks.

10. A composite furnace wall comprising a permanent Wall and areplaceable highly refractory inner wall, the latter including 10shelf-forming blocks extended into said permanent wall but terminatingat points outward of the exposed faceof said replaceable Wall, and firebricks built into said replace- I able Wall and rotecting the inner endsof 15 said shelf-forming blocks. a

In testimony whereof I aflix my signature.

MICHAEL LIPTAK.

